/Engine/Plugins/Experimental/Mutable/Source/CustomizableObject/Classes/MuCO/CustomizableObjectExtension.h
Returns any new pin types that are defined by this extension
virtual [TArray](API\Runtime\Core\Containers\TArray)< [FCustomizableObjectPinType](API\Plugins\CustomizableObject\MuCO\FCustomizableObjectPinType) > GetPinTypes() const